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Finding the Fourth Proportional to 4,692.79, 7,036.58 and 1,921.41

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Solution

The fourth proportional to 4,692.79, 7,036.58 and 1,921.41 is: 2,881.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692.79 : 7,036.58 = 1,921.41 : x
  2. Step 2: Convert to fraction form
    4,692.79/7,036.58 = 1,921.41/x
  3. Step 3: Cross multiply
    4,692.79x = 7,036.58 × 1,921.41
  4. Step 4: Simplify right side
    4,692.79x = 13,520,155.18
  5. Step 5: Solve for x
    x = 13,520,155.18/4,692.79
  6. Step 6: Final answer
    x = 2,881.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.